Emerson Frostad has played in the Texas Rangers chain and for Team Canada.

Frostad was a member of the Canadian Junior National baseball team in 2001.

In 2002, Frostad helped Lewis-Clark to the NAIA College World Series title. He hit .354 with 52 RBI and 11 home runs in 2003, helping them to another NAIA College World Series victory. The Texas Rangers took him in the 13th round of the 2003 amateur draft. He spent the summer with the Fairbanks Goldpanners and batted .278 with 15 doubles and slugged .467; his 15 doubles might have led the Alaska League. Baseball America rated him as the #8 prospect in the league.

Frostad debuted in the minors with the Clinton Lumber Kings, struggling with a .216/.308/.322 batting line as the regular third baseman. In 2005, Frostad led or was second on Clinton in almost every offensive category, batting .269/.346/.449 with 26 doubles, 16 home runs and 72 runs.

Frostad was converted to a catcher for 2006 and produced at a solid .320/.389/.553 clip with 30 doubles and 12 home runs in 291 AB, driving in 51 for the Bakersfield Blaze. He struggled defensively at his new position, leading California League catchers in errors (12) and double plays (33). He appeared with Team Canada in the 2006 COPABE Olympic Qualifier, crushing the ball with a .421/.500/.737 batting line and 8 runs in 7 games. He was 8th in the tournament in average as Canada failed to qualify in the event but did make it to the 2008 qualifier.

In 2007, Frostad did okay in his AA debut. Now a first baseman with the Frisco Rough Riders, he hit .241/.320/.417 with 13 home runs, 44 RBI and 83 strikeouts in 307 at-bats. He led Texas League first basemen in assists (70) and errors (9).

Frostad returned to Team Canada for the 2007 Baseball World Cup and hit .222/.318/.556; he drove in 9 runs in 18 AB and two of his four hits were home runs. He led Canada in RBI in the competition. 7 of his 9 RBI and both home runs came in the game against the tournament's biggest patsy, the Thai national team. The other 2 RBI came on a single against Dutch reliever Dave Draijer in a key Canadian win. He helped Canada in a bottom-of-the-9th rally against Australia that fell short by a run; he walked against Brendan Wise and later scored on a Mike Saunders hit.